The trees exchange carbon dioxide and oxygen with the atmosphere through little “mouths” in their leaves and tiny “windows” ...

But winter is precisely the time for shrubs with colorful branches and trees with ornamental bark to shine. Bark serves as the skin of the tree, protecting the internal plumbing from disease or ...

Just as the trees evolved bark to help protect their more vulnerable tissues inside, the dinosaur evolved thick, pointed osteoderms along its flanks—bony armor floating in the skin that could ...

By Aislinn Sarnacki Have you ever noticed how much tree bark varies in texture, color and pattern? If your answer is “no,” I ...

Bark beetle-infested spruce trees begin to dry out already before any visible signs of tree mortality appear, a recent study shows. Bark beetle-infested spruce trees begin to dry out already ...